1// SPDX-License-Identifier: GPL-2.0-only
2//
3// ASoC DPCM Machine driver for Baytrail / Cherrytrail platforms with
4// CX2072X codec
5//
6
7#include <linux/acpi.h>
8#include <linux/device.h>
9#include <linux/gpio/consumer.h>
10#include <linux/module.h>
11#include <linux/platform_device.h>
12#include <linux/slab.h>
13#include <sound/pcm.h>
14#include <sound/pcm_params.h>
15#include <sound/jack.h>
16#include <sound/soc.h>
17#include <sound/soc-acpi.h>
18#include "../../codecs/cx2072x.h"
19#include "../atom/sst-atom-controls.h"
20
21static const struct snd_soc_dapm_widget byt_cht_cx2072x_widgets[] = {
22	SND_SOC_DAPM_HP("Headphone", NULL),
23	SND_SOC_DAPM_MIC("Headset Mic", NULL),
24	SND_SOC_DAPM_MIC("Int Mic", NULL),
25	SND_SOC_DAPM_SPK("Ext Spk", NULL),
26};
27
28static const struct snd_soc_dapm_route byt_cht_cx2072x_audio_map[] = {
29	/* External Speakers: HFL, HFR */
30	{"Headphone", NULL, "PORTA"},
31	{"Ext Spk", NULL, "PORTG"},
32	{"PORTC", NULL, "Int Mic"},
33	{"PORTD", NULL, "Headset Mic"},
34
35	{"Playback", NULL, "ssp2 Tx"},
36	{"ssp2 Tx", NULL, "codec_out0"},
37	{"ssp2 Tx", NULL, "codec_out1"},
38	{"codec_in0", NULL, "ssp2 Rx"},
39	{"codec_in1", NULL, "ssp2 Rx"},
40	{"ssp2 Rx", NULL, "Capture"},
41};
42
43static const struct snd_kcontrol_new byt_cht_cx2072x_controls[] = {
44	SOC_DAPM_PIN_SWITCH("Headphone"),
45	SOC_DAPM_PIN_SWITCH("Headset Mic"),
46	SOC_DAPM_PIN_SWITCH("Int Mic"),
47	SOC_DAPM_PIN_SWITCH("Ext Spk"),
48};
49
50static struct snd_soc_jack byt_cht_cx2072x_headset;
51
52/* Headset jack detection DAPM pins */
53static struct snd_soc_jack_pin byt_cht_cx2072x_headset_pins[] = {
54	{
55		.pin = "Headset Mic",
56		.mask = SND_JACK_MICROPHONE,
57	},
58	{
59		.pin = "Headphone",
60		.mask = SND_JACK_HEADPHONE,
61	},
62};
63
64static const struct acpi_gpio_params byt_cht_cx2072x_headset_gpios;
65static const struct acpi_gpio_mapping byt_cht_cx2072x_acpi_gpios[] = {
66	{ "headset-gpios", &byt_cht_cx2072x_headset_gpios, 1 },
67	{},
68};
69
70static int byt_cht_cx2072x_init(struct snd_soc_pcm_runtime *rtd)
71{
72	struct snd_soc_card *card = rtd->card;
73	struct snd_soc_component *codec = asoc_rtd_to_codec(rtd, 0)->component;
74	int ret;
75
76	if (devm_acpi_dev_add_driver_gpios(codec->dev,
77					   byt_cht_cx2072x_acpi_gpios))
78		dev_warn(rtd->dev, "Unable to add GPIO mapping table\n");
79
80	card->dapm.idle_bias_off = true;
81
82	/* set the default PLL rate, the clock is handled by the codec driver */
83	ret = snd_soc_dai_set_sysclk(asoc_rtd_to_codec(rtd, 0), CX2072X_MCLK_EXTERNAL_PLL,
84				     19200000, SND_SOC_CLOCK_IN);
85	if (ret) {
86		dev_err(rtd->dev, "Could not set sysclk\n");
87		return ret;
88	}
89
90	ret = snd_soc_card_jack_new(card, "Headset",
91				    SND_JACK_HEADSET | SND_JACK_BTN_0,
92				    &byt_cht_cx2072x_headset,
93				    byt_cht_cx2072x_headset_pins,
94				    ARRAY_SIZE(byt_cht_cx2072x_headset_pins));
95	if (ret)
96		return ret;
97
98	snd_soc_component_set_jack(codec, &byt_cht_cx2072x_headset, NULL);
99
100	snd_soc_dai_set_bclk_ratio(asoc_rtd_to_codec(rtd, 0), 50);
101
102	return 0;
103}
104
105static int byt_cht_cx2072x_fixup(struct snd_soc_pcm_runtime *rtd,
106				 struct snd_pcm_hw_params *params)
107{
108	struct snd_interval *rate =
109		hw_param_interval(params, SNDRV_PCM_HW_PARAM_RATE);
110	struct snd_interval *channels =
111		hw_param_interval(params, SNDRV_PCM_HW_PARAM_CHANNELS);
112	int ret;
113
114	/* The DSP will covert the FE rate to 48k, stereo, 24bits */
115	rate->min = rate->max = 48000;
116	channels->min = channels->max = 2;
117
118	/* set SSP2 to 24-bit */
119	params_set_format(params, SNDRV_PCM_FORMAT_S24_LE);
120
121	/*
122	 * Default mode for SSP configuration is TDM 4 slot, override config
123	 * with explicit setting to I2S 2ch 24-bit. The word length is set with
124	 * dai_set_tdm_slot() since there is no other API exposed
125	 */
126	ret = snd_soc_dai_set_fmt(asoc_rtd_to_cpu(rtd, 0),
127				SND_SOC_DAIFMT_I2S     |
128				SND_SOC_DAIFMT_NB_NF   |
129				SND_SOC_DAIFMT_CBS_CFS);
130	if (ret < 0) {
131		dev_err(rtd->dev, "can't set format to I2S, err %d\n", ret);
132		return ret;
133	}
134
135	ret = snd_soc_dai_set_tdm_slot(asoc_rtd_to_cpu(rtd, 0), 0x3, 0x3, 2, 24);
136	if (ret < 0) {
137		dev_err(rtd->dev, "can't set I2S config, err %d\n", ret);
138		return ret;
139	}
140
141	return 0;
142}
143
144static int byt_cht_cx2072x_aif1_startup(struct snd_pcm_substream *substream)
145{
146	return snd_pcm_hw_constraint_single(substream->runtime,
147					    SNDRV_PCM_HW_PARAM_RATE, 48000);
148}
149
150static struct snd_soc_ops byt_cht_cx2072x_aif1_ops = {
151	.startup = byt_cht_cx2072x_aif1_startup,
152};
153
154SND_SOC_DAILINK_DEF(dummy,
155	DAILINK_COMP_ARRAY(COMP_DUMMY()));
156
157SND_SOC_DAILINK_DEF(media,
158	DAILINK_COMP_ARRAY(COMP_CPU("media-cpu-dai")));
159
160SND_SOC_DAILINK_DEF(deepbuffer,
161	DAILINK_COMP_ARRAY(COMP_CPU("deepbuffer-cpu-dai")));
162
163SND_SOC_DAILINK_DEF(ssp2,
164	DAILINK_COMP_ARRAY(COMP_CPU("ssp2-port")));
165
166SND_SOC_DAILINK_DEF(cx2072x,
167	DAILINK_COMP_ARRAY(COMP_CODEC("i2c-14F10720:00", "cx2072x-hifi")));
168
169SND_SOC_DAILINK_DEF(platform,
170	DAILINK_COMP_ARRAY(COMP_PLATFORM("sst-mfld-platform")));
171
172static struct snd_soc_dai_link byt_cht_cx2072x_dais[] = {
173	[MERR_DPCM_AUDIO] = {
174		.name = "Audio Port",
175		.stream_name = "Audio",
176		.nonatomic = true,
177		.dynamic = 1,
178		.dpcm_playback = 1,
179		.dpcm_capture = 1,
180		.ops = &byt_cht_cx2072x_aif1_ops,
181		SND_SOC_DAILINK_REG(media, dummy, platform),
182	},
183	[MERR_DPCM_DEEP_BUFFER] = {
184		.name = "Deep-Buffer Audio Port",
185		.stream_name = "Deep-Buffer Audio",
186		.nonatomic = true,
187		.dynamic = 1,
188		.dpcm_playback = 1,
189		.ops = &byt_cht_cx2072x_aif1_ops,
190		SND_SOC_DAILINK_REG(deepbuffer, dummy, platform),
191	},
192	/* back ends */
193	{
194		.name = "SSP2-Codec",
195		.id = 0,
196		.no_pcm = 1,
197		.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF
198					      | SND_SOC_DAIFMT_CBS_CFS,
199		.init = byt_cht_cx2072x_init,
200		.be_hw_params_fixup = byt_cht_cx2072x_fixup,
201		.nonatomic = true,
202		.dpcm_playback = 1,
203		.dpcm_capture = 1,
204		SND_SOC_DAILINK_REG(ssp2, cx2072x, platform),
205	},
206};
207
208#if IS_ENABLED(CONFIG_SND_SOC_SOF_BAYTRAIL)
209/* use space before codec name to simplify card ID, and simplify driver name */
210#define CARD_NAME "bytcht cx2072x" /* card name will be 'sof-bytcht cx2072x' */
211#define DRIVER_NAME "SOF"
212#else
213#define CARD_NAME "bytcht-cx2072x"
214#define DRIVER_NAME NULL /* card name will be used for driver name */
215#endif
216
217/* SoC card */
218static struct snd_soc_card byt_cht_cx2072x_card = {
219	.name = CARD_NAME,
220	.driver_name = DRIVER_NAME,
221	.owner = THIS_MODULE,
222	.dai_link = byt_cht_cx2072x_dais,
223	.num_links = ARRAY_SIZE(byt_cht_cx2072x_dais),
224	.dapm_widgets = byt_cht_cx2072x_widgets,
225	.num_dapm_widgets = ARRAY_SIZE(byt_cht_cx2072x_widgets),
226	.dapm_routes = byt_cht_cx2072x_audio_map,
227	.num_dapm_routes = ARRAY_SIZE(byt_cht_cx2072x_audio_map),
228	.controls = byt_cht_cx2072x_controls,
229	.num_controls = ARRAY_SIZE(byt_cht_cx2072x_controls),
230};
231
232static char codec_name[SND_ACPI_I2C_ID_LEN];
233
234static int snd_byt_cht_cx2072x_probe(struct platform_device *pdev)
235{
236	struct snd_soc_acpi_mach *mach;
237	struct acpi_device *adev;
238	int dai_index = 0;
239	int i, ret;
240
241	byt_cht_cx2072x_card.dev = &pdev->dev;
242	mach = dev_get_platdata(&pdev->dev);
243
244	/* fix index of codec dai */
245	for (i = 0; i < ARRAY_SIZE(byt_cht_cx2072x_dais); i++) {
246		if (!strcmp(byt_cht_cx2072x_dais[i].codecs->name,
247			    "i2c-14F10720:00")) {
248			dai_index = i;
249			break;
250		}
251	}
252
253	/* fixup codec name based on HID */
254	adev = acpi_dev_get_first_match_dev(mach->id, NULL, -1);
255	if (adev) {
256		snprintf(codec_name, sizeof(codec_name), "i2c-%s",
257			 acpi_dev_name(adev));
258		put_device(&adev->dev);
259		byt_cht_cx2072x_dais[dai_index].codecs->name = codec_name;
260	}
261
262	/* override plaform name, if required */
263	ret = snd_soc_fixup_dai_links_platform_name(&byt_cht_cx2072x_card,
264						    mach->mach_params.platform);
265	if (ret)
266		return ret;
267
268	return devm_snd_soc_register_card(&pdev->dev, &byt_cht_cx2072x_card);
269}
270
271static struct platform_driver snd_byt_cht_cx2072x_driver = {
272	.driver = {
273		.name = "bytcht_cx2072x",
274#if IS_ENABLED(CONFIG_SND_SOC_SOF_BAYTRAIL)
275		.pm = &snd_soc_pm_ops,
276#endif
277	},
278	.probe = snd_byt_cht_cx2072x_probe,
279};
280module_platform_driver(snd_byt_cht_cx2072x_driver);
281
282MODULE_DESCRIPTION("ASoC Intel(R) Baytrail/Cherrytrail Machine driver");
283MODULE_LICENSE("GPL v2");
284MODULE_ALIAS("platform:bytcht_cx2072x");
285